Published November 1, 1980 | Version v1
Patent Metadata-only

BWR type reactors

Creators

  • 1. Toshiba Corp., Kawasaki, Kanagawa (Japan)

Description

Purpose: To effectively eliminate radioactive substances released upon loss of coolant accidents in BWR type reactors. Constitution: A high pressure gas jetting device having a plurality of small aperture nozzles is provided above a spray nozzle, that is, at the top of a dry well. The jetting device is connected to a vacuum breaker provided in a pressure suppression chamber. Upon loss of coolant accident, coolants are sprayed from the spray nozzle and air or nitrogen is jetted from the gas jetting device as well. Then, the gases in the dry well are disturbed, whereby radioactive iodine at high concentration liable to be accumulated in the dry well is forced downwardly, dissolved in the spray water and eliminated. (Ikeda, J.)

Availability note (English)

Available from JAPATIC. Also available from INPADOC.

Additional details

Publishing Information

Imprint Pagination
3 p.
IPC:
Int. Cl. G21D3/04; G21C15/18; G21F9/02.
IPC
Int. Cl. G21D3/04; G21C15/18; G21F9/02.
Patent number
JP patent document 55-140199/A/

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
12625219
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
AIR; BWR TYPE REACTORS; CORE SPRAY SYSTEMS; DECONTAMINATION; IODINE ISOTOPES; JETS; LOSS OF COOLANT; NITROGEN; NOZZLES; WASHOUT
Descriptors DEC
ACCIDENTS; CLEANING; ECCS; ELEMENTS; FALLOUT; FLUIDS; GASES; NONMETALS; REACTOR ACCIDENTS; REACTOR PROTECTION SYSTEMS; REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS